Well, I cant help with something to go inplace of the stock radio, but you could always get one of those decks that are supposed to mount in the trunk and you have a control unit you can have in the front of the car for it without cutting, though Im not sure how you will secure it. My dad has one in his jeep and has it velcroed to the dash.

Personally, I'm not a fan of Custom Autosound. Just cheap stuff with a shiny face IMO. That's what I've seen around the shop. I've seen a few that just plain don't work within months, or years. I don't know if they've improved since then.